Question

Assertion (A): Chromosomes are folds of chromatin fibres packed with DNA and proteins that form the genetic material.

Reason (R): Genes are segments of RNA and is the fundamental unit of heredity.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Answer 1

A is true but R is false.

Explanation:

The assertion is true because chromosomes are indeed highly condensed, folded structures composed of chromatin fibres, which are densely packed with DNA and histone proteins to form the cell’s genetic material. However, the reason is false because genes are functional segments of DNA (Deoxyribonucleic Acid), not RNA, that serve as the fundamental unit of heredity in most living organisms.